胚细胞

This process, called vasculogenesis ,involves the de novo differentiation of endothelial cell from mesodermal precursor to form the primitive blood vessel network.

血管生成是指在胚胎发生和器官形成过程中，从中胚层内皮细胞中分化出新的内皮细胞以形成原始血管网的过程，仅见于胚胎发生的早期，出生后即停止。

Here we address this question, focusing on SKPs, a cultured adult stem cell from the dermis that generates both neural and mesodermal progeny.

本文仅就 SKPs 对此问题进行研究， SKPs 是来自皮肤真皮层的一种成体干细胞，该类细胞可以生成神经源性和中胚叶来源的子代细胞。

The layer of flat cells of mesodermal origin that lines the embryonic body cavity and gives rise to the squamous cells of the peritoneum, pericardium, and pleura .

间皮起源于中胚层的扁平细胞层，衬于胚胎的原始体腔中，最终发育成腹膜、心包及胸膜的上皮细胞

Lineage-tracing analyses indicate that the ectopic endothelial cells in embryos with decreased Notch activity originate from mesodermal cells that normally produce erythrocyte progenitors.

命运追踪结果显示，Notch降低的胚胎中，异常增加的内皮细胞是来源于本应该形成红细胞前体的中胚层细胞。

Nucleared blood cells, cells of glomerulus and mesonephric tubule express multiple growth factors and their receptors.

人胚中肾内的有核血细胞、肾小管内皮细胞、肾小囊和肾小球细胞表达多种生长因子。

PPO gene was not detected in the multiple myelome、 malignant fibrous histiocytoma 、malignant lymphoma、malignant neurosarcoma、solitary plasmacytoma of bone、primitive neuroectodermal tumors、lipoma、 osteosarcoma and sarcoenchondroma.

PPO基因在多发性骨髓瘤、恶性纤维组织细胞瘤、恶性淋巴瘤、恶性神经肉瘤、孤立性浆细胞肉瘤、原始神经外胚瘤、脂肪瘤、骨及软骨肉瘤等肿瘤中没有表达。在骨巨细胞瘤中有微弱表达。

And the biochemical, cytochemical and ultrastructural changes in the nucellar cells in relation to the pollen chamber formation were studied.

胚珠贮粉室的发育过程，进行了扫描电子显微镜的观察，并对其间相关珠心细胞的生物化学、细胞化学和超微结构变化作了研究。

Results showed sTGC-CM, which is similar with the effect of hTGC-CM, was able to induce human DPSCs to make odontoblastic changes as indicated by remarkable morphological changes, increased proliferation ability, higher multipotential and colony forming capability, and expression of some odontogenic markers in gene and protein levels,such as DSP, DSPP, DMP1, BSP, OCN, OPN.

结果表明：人牙髓干细胞经过一定时间的猪牙胚条件培养基诱导后，能在细胞形态上和细胞周期上发生改变，能具有更高的克隆形成能力和多向分化能力，能维持更好的干细胞特性，具有更强的增殖能力，表达更高水平的碱性磷酸酶，免疫组化和RT-PCR提示诱导后的牙髓干细胞能在蛋白水平和基因水平表达出一些牙向分化的标志，如DSP、DSPP、DMP1、BSP、OCN、OPN等。

Confocal laser scanning microscopy used to localize the hsp70 protein in oocytes and embryos revealed that the distribution of hsp70 in the ooplasm of immature and mature oocytes is unaffected by exposure to decreased or elevated temperatures and that this protein was closely associated with the meiotic spindle indicating its possible role in stabilizing this structure, hi eight-cell embryos derived under control conditions, hsp70 was evenly distributed in the cytoplasm but appeared as aggregates in some embryos exposed to elevated temperature.

此蛋白均匀地分布在两种细胞的胞浆中。此形态特点与减数分裂期纺缍体有关，由此表明hsp70在中期Ⅱ期，具有稳定这种结构的作用。在对照组8细胞胚中，hsp70均匀地分布在胞浆中，而在处理组一些胚胎内，hsp70则发生凝集。

A single donor cell was injected into the perivitelline space of enucleated oocyte and fusion was induced with electric pulses. Reconstructed oocytes were activated using ionomycin (5 M,5min) and 6-dimethylaminopurine (6-DMAP,2mM,5h).

将供核细胞注射到去核卵母细胞的卵周隙，经电融合获得重构胚，再经离子霉素(Ionomycin，5μM，5min)和6-二甲基氨基嘌呤(6-DMAP，2mM，5h)处理激活。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。